CA306412A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA306412A
CA306412A CA306412A CA306412DA CA306412A CA 306412 A CA306412 A CA 306412A CA 306412 A CA306412 A CA 306412A CA 306412D A CA306412D A CA 306412DA CA 306412 A CA306412 A CA 306412A
Authority
CA
Canada
Prior art keywords
rock drill
drill
rock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA306412A
Other languages
English (en)
Inventor
Murray John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA306412A publication Critical patent/CA306412A/fr
Expired legal-status Critical Current

Links

CA306412A Perforatrice a roc Expired CA306412A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA306412T

Publications (1)

Publication Number Publication Date
CA306412A true CA306412A (fr) 1930-12-02

Family

ID=35259563

Family Applications (1)

Application Number Title Priority Date Filing Date
CA306412A Expired CA306412A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA306412A (fr)

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